/**
* Create html for revision navigation
*
* @param PageChangeLog $pagelog changelog object of current page
* @param string $type inline vs sidebyside
* @param int $l_rev left revision timestamp
* @param int $r_rev right revision timestamp
* @return string[] html of left and right navigation elements
*/
function html_diff_navigation($pagelog, $type, $l_rev, $r_rev)
{
global $INFO, $ID;
// last timestamp is not in changelog, retrieve timestamp from metadata
// note: when page is removed, the metadata timestamp is zero
if (!$r_rev) {
if (isset($INFO['meta']['last_change']['date'])) {
$r_rev = $INFO['meta']['last_change']['date'];
} else {
$r_rev = 0;
}
}
//retrieve revisions with additional info
list($l_revs, $r_revs) = $pagelog->getRevisionsAround($l_rev, $r_rev);
$l_revisions = array();
if (!$l_rev) {
$l_revisions[0] = array(0, "", false);
//no left revision given, add dummy
}
foreach ($l_revs as $rev) {
$info = $pagelog->getRevisionInfo($rev);
$l_revisions[$rev] = array($rev, dformat($info['date']) . ' ' . editorinfo($info['user'], true) . ' ' . $info['sum'], $r_rev ? $rev >= $r_rev : false);
}
$r_revisions = array();
if (!$r_rev) {
$r_revisions[0] = array(0, "", false);
//no right revision given, add dummy
}
foreach ($r_revs as $rev) {
$info = $pagelog->getRevisionInfo($rev);
$r_revisions[$rev] = array($rev, dformat($info['date']) . ' ' . editorinfo($info['user'], true) . ' ' . $info['sum'], $rev <= $l_rev);
}
//determine previous/next revisions
$l_index = array_search($l_rev, $l_revs);
$l_prev = $l_revs[$l_index + 1];
$l_next = $l_revs[$l_index - 1];
if ($r_rev) {
$r_index = array_search($r_rev, $r_revs);
$r_prev = $r_revs[$r_index + 1];
$r_next = $r_revs[$r_index - 1];
} else {
//removed page
if ($l_next) {
$r_prev = $r_revs[0];
} else {
$r_prev = null;
}
$r_next = null;
}
/*
* Left side:
*/
$l_nav = '';
//move back
if ($l_prev) {
$l_nav .= html_diff_navigationlink($type, 'diffbothprevrev', $l_prev, $r_prev);
$l_nav .= html_diff_navigationlink($type, 'diffprevrev', $l_prev, $r_rev);
}
//dropdown
$form = new Doku_Form(array('action' => wl()));
$form->addHidden('id', $ID);
$form->addHidden('difftype', $type);
$form->addHidden('rev2[1]', $r_rev);
$form->addHidden('do', 'diff');
$form->addElement(form_makeListboxField('rev2[0]', $l_revisions, $l_rev, '', '', '', array('class' => 'quickselect')));
$form->addElement(form_makeButton('submit', 'diff', 'Go'));
$l_nav .= $form->getForm();
//move forward
if ($l_next && ($l_next < $r_rev || !$r_rev)) {
$l_nav .= html_diff_navigationlink($type, 'diffnextrev', $l_next, $r_rev);
}
/*
* Right side:
*/
$r_nav = '';
//move back
if ($l_rev < $r_prev) {
$r_nav .= html_diff_navigationlink($type, 'diffprevrev', $l_rev, $r_prev);
}
//dropdown
$form = new Doku_Form(array('action' => wl()));
$form->addHidden('id', $ID);
$form->addHidden('rev2[0]', $l_rev);
$form->addHidden('difftype', $type);
$form->addHidden('do', 'diff');
$form->addElement(form_makeListboxField('rev2[1]', $r_revisions, $r_rev, '', '', '', array('class' => 'quickselect')));
$form->addElement(form_makeButton('submit', 'diff', 'Go'));
$r_nav .= $form->getForm();
//move forward
if ($r_next) {
if ($pagelog->isCurrentRevision($r_next)) {
$r_nav .= html_diff_navigationlink($type, 'difflastrev', $l_rev);
//last revision is diff with current page
} else {
$r_nav .= html_diff_navigationlink($type, 'diffnextrev', $l_rev, $r_next);
}
$r_nav .= html_diff_navigationlink($type, 'diffbothnextrev', $l_next, $r_next);
}
return array($l_nav, $r_nav);
}
/**
* When rev1 > rev2, their order is changed
*/
function test_request_wrong_order_revs()
{
$rev1 = 1362527164;
$rev2 = 1362526767;
$max = 10;
$revsexpected = array(array_slice($this->revsexpected, 8, 11), array_slice($this->revsexpected, 5, 11));
$pagelog = new PageChangeLog($this->pageid, $chunk_size = 8192);
$revs = $pagelog->getRevisionsAround($rev1, $rev2, $max);
$this->assertEquals($revsexpected, $revs);
$pagelog = new PageChangeLog($this->pageid, $chunk_size = 512);
$revs = $pagelog->getRevisionsAround($rev1, $rev2, $max);
$this->assertEquals($revsexpected, $revs);
$pagelog = new PageChangeLog($this->pageid, $chunk_size = 20);
$revs = $pagelog->getRevisionsAround($rev1, $rev2, $max);
$this->assertEquals($revsexpected, $revs);
}
